RATIOS and

PROPORTIONS


Parts of the Proportions

The Parts of the Proportion are the Means and the Extremes.

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The Means of the Proportion

The two numbers closest to the :: operand are known as the means

of the proportion.

1

:

2

::

3

:

6

Means

In this example, the 2 and the 3 are the means.

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The Extremes of the Proportion

The two numbers farthest away from the :: operand are

known as the extremes of the proportion.

1

:

2

::

3

:

6

Extremes

In this example, the 1 and the 6 are the extremes.

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More Examples of Means and Extremes

2

:

3

::

12

:

18

Means

The means are 3 and 12

2

:

3

::

12

:

18

Extremes

The extremes are 2 and 18

* * * * *

20

:

1

::

100

:

5

Means

The means are 1 and 100

20

:

1

::

100

:

5

Extremes

The extremes are 20 and 5

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